Kyocera ECOSYS M2030dn/PN Servlce Manual page 137

Code
6400 Zero cross signal error
The zero cross signal does not
reach the control PWB for specified
time.
7990 Waste toner full
The waste toner sensor has
detected that the waste toner reser-
voir (drum unit) is full.
Contents
Causes
Defective har- Reinsert the connector. Also check for
ness between continuity within the connector har-
high voltage ness. If none, remedy or replace the
PWB (CN202) harness (See page 1-5-37).
and control PWB
(YC23), or
improper con-
nector insertion.
Defective con- Reinsert the connector.
nection between
power source
PWB (YC103)
and high voltage
PWB (CN201).
Defective power Replace the power source PWB (See
source PWB. page 1-5-40).
Defective control Replace the control PWB (See page 1-
PWB. 5-37).
Waste toner res- Turn the power switch off/on to restart
ervoir (drum unit) the machine. If the error is not resolved,
is full. replace the drum unit (See page 1-5-
28).
Defective waste Replace the waste toner sensor.
toner sensor.
Defective control Replace the control PWB (See page 1-
PWB. 5-37).
1-4-15
2PK/2PL/2PM/2PN
Remarks
Check procedures
/corrective measures